Why does zinc steel guardrail not rust?
The surface of the zinc steel guardrail adopts a good Aksu-Nobel color polymer enamel imitation electrophoresis high-temperature curing process, which is 10-20 times stronger than the common spraying anti-corrosion ability, can bear 50 kilograms of impact force per square centimeter, and has the performances of ultraviolet resistance, oxidation resistance, saline alkali resistance, weather resistance, fog resistance and the like, and the indexes of glossiness, color degree self-cleaning performance and the like of the surface all exceed the standards of the guardrail, so as to ensure that the surface color changes for 20 years are not more than 5%. The popular combination insertion process is adopted, and any connection adopts high-strength modified engineering nylon connectors without welding, so as to ensure that the base material is not damaged and enhance antirust capability. The high-strength modified engineering nylon connector has ultraviolet resistance, oxidation resistance, salt and alkali resistance, weather resistance, fog resistance and other properties far exceeding the standards of the fence connector, and can withstand an impact force of 1.83 tons per square centimeter, with a service life of 50 years.
Phosphating is a very common process in the manufacture and processing of zinc-steel guardrails. Phosphating agents play a very important role in increasing adhesion and improving the smoothness of sprayed powder. At present, most commonly used phosphating agents are normal temperature phosphating agents. Its low loss and working characteristics at normal temperature enable it to be used all the year round, avoiding the trouble of heating in winter.
Zinc and steel guardrails are generally installed outdoors, and they are often exposed to the scorching sun, wind and rain, and are subjected to wind and rain all the year round. In order to prevent the guardrails from showing signs of age after use, we need to carry out technological innovation. Tests prove that the zinc alloy steel process and Akzonol powder spraying process processed on the guardrail can prolong the service life of the zinc steel guardrail under harsh and harsh environment.